以细菌纤维素(BC)为模板,硫酸铜、硫脲为原料,通过一步水热合成法得到具有三维花状结构的硫化铜(CuS)复合微球。通过XRD、SEM表征了BC/CuS复合材料的结晶结构和微观形貌,并对花状微球的形成机理进行了探究。在紫外照射条件下通过BC/CuS复合材料进行罗丹明B(RhB)的光降解实验并评估其光催化性能,结果表明,复合材料对RhB降解率高达98.2%,且重复5次后仍能保持较高的催化活性。捕捉剂实验证明超氧自由基(·O₂^-)和空穴(h⁺)是复合材料光催化降解反应中的主要活性物种。

Bacterial cellulose/copper sulfide composite (BC/CuS) microspheres with three-dimensional flower-like structure are synthesized from copper sulfate and thiourea by one-step hydrothermal method using BC as the template.The crystalline structure and morphology of BC/CuS composites are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM),and the mechanism of formation of flower-like microsphere is explored.The photodegradation of Rhodamine B (RhB) by BC/CuS composites under UV irradiation is carried out.It is shown that the degradation rate of RhB by BC/CuS composites reaches as high as 98.2%,and the catalytic activity of the composites remains intact after 5 times of repeated photocatalytic degradation.It is verified through capture agent experiments that superoxide radical (·O₂^-) and hole (h⁺) are the main active species of composites during photocatalytic degradation.

邝美霞(1995-),女,硕士研究生,主要从事有机/无机杂化材料的研究,2740698065@qq.com